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Can't in/decrease DHCP range; "IP address is in the range of an existing network"

Question asked by Julius Kaiser on Jan 19, 2018
Latest reply on Apr 17, 2018 by Julius Kaiser

Hello folks,



I can't change the dhcp range on a CP 1450 appliance; "IP address is in the range of an existing network". I don't see that anything overlaps with the range.


Deactivating/ reactivating DHCP and rebooting was of no help. The firmware is up to date.


Please see attached screenshots; no matter if I try to increase or decrease the DHCP-scope, error stays the same.


Am I doing something wrong here or is this a bug?


Thanks in advance!



Appliance:Check Point 1450 Appliance (rmg-oregon-fw01)
Security Management:Locally managed
Version (Firmware):R77.20.70 (990171948)